Hemoglobinometer



July 7, 1925.

. P. c. ACKERMAN HEMOGLOBINOMETER I Filed Aug. 1' 192s FIG. 1

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PATIENTS Recon NAM'E CONn| l0N "L DATE i PHILIP c. 'AoKERmAN, or MOUNTAIN LAKES, NnwaERsEY, AssIeNoa TO, MERCK & 00., or EW YORK, N. ,Y., A ooRroRATIoNoF P ate-ntedJuly 7, 1925.

" UNITED sr rE s PATENT OFFICE.

nnmoenonmomurmt.

Application filed August 17, 1923. Serial No. 657,997.

To all whom it may concern:

Be itknoWn-t-hat I, PHILIP C. AoKERMAN,

a citizen of the United S,tates, residing at MountainLakes, in the county of Morris, State of .New Jersey, have invented certain new and useful Improvements in Hemoglobinometers, such as are used for testing the blood, and more particularly for deter-,-

mining the percentage of" hemoglobin inthe blood.

The invention'has for its main'object toprovide a complete and self-containingdevice of this character which will permit of the same being usedwimmediately when 'a patient is being examined and independent- 1y of a dark room, a special source of light,

or other special circumstances or material,

' and which is ofa form suitable for recording the results of the tests made, and of neat and compact size to fit it for filing in a card index cabinet. I

My invention comprises a device of this character embodying acolorimetric system in which the different shades of the color are arranged with openings in each field' -of color so that absorbent paper strips carrying a blood sampleto be matched may be passed along the scale of colors to show through the openings in the colorscale for the purpose of matching the'blood stainswith the color scale.

The invention consists of the novel con= struction, combinat on, and arrangement of parts which'will-be hereinafter more fully described and then particularly claimed, andxin rles'cribing the invention in detail, reference will be had to the accompanying drawing forming a part of this application and 'wherein like numerals or reference will be emplbyed to indicate like parts throughout the difierent views of the drawing, in'

Figure 1 is a front view showing the color scale of the hemoglobinometer;

Figure 2 is a back view showing provision for patients record of hemoglobin findings.

' inserted therein.

To put my invention into practice, I provide a card-index filing card consisting of NEW YORK.

superimposed layers of paper or similar material, preferably consisting of a folded or overlapped single piece of card board,- though, of course, I do not confine myself eto any specific material. The sides (a) of the paper may be and preferably are permanently fastenedalong thetedges by pasting or other suitable means so as to form a pocket (6) which servesas a receptacle for absorbent paper (a) andalso for-inserting and guiding the paper alongthe slot (9) so that p'ortionsof it may be passed under and along the-scale ofcolors (e) printedonthe front face of the card to show through openings (d) in the colorscale for th'epurpose of matching blood stains (f) on the absorbent strips with the color scale.

The said color scale consists of different sorbent paper whennoh in 'use, and as aholder and guide for readily inserting and rapidly passing back and .forth a strip of paper with a blood stain along and under the perforations in the individual fields of color of the bloody color scale while endeavoring to match the specimen with the scale.

In using the apparatus for the'purpose of this invention; an absorbent paper is em; ployed, preferably in the form of longnarrow strips '(0), and l have'found it convenient to arrangejhis paper in' perforated.

sheets so that the strips (0) may easily be detached by tearing for use in absorbing the blood to be tested. When the sheets are not in use they can conveniently be carried in the pocket (1)) formediby the superimposed layers of paper, previously described, clean ice and ready for immediate use in blood test Having fullyv described my invention,

what I claim as new is: I e

1. A hemoglobinometer and index card comprising an overlapped sheet forming a pocket between the overlapped faces, a gradluv , uated color scale on one face thereof, anda record chart on the other face of said car 2. A hemoglobinometer consisting of an overlapped sheet forming a pocket between, the overlapped portions thereof, a graduated color scale on one of the overlapped portions, and perforations in each of the fields of color of said scale and in combination'therewith a record chart on the opposite side. A

3. A hemoglobinometer consisting of an index cardwith a chart for a clinical rec.-

ord on one face thereof, a graduated. color a 0rd on one face thereof, a graduated color scale on the other face, a pocket formed by the overlapping of these two faces, and having' a perforation in each color field of the said color scale; 1

4. A hemoglobinometer consisting of an index card with a chart for a clinical rec- .scale on the other face, a pocket formed by the overlapping of these twofaces, and having a perforatlon in each color field-of the said color scale, and having cut' out of the lower edge of the face containing the said color scale that substantially oblong section" between the said lower edge of that face and the lower margin: of thesa'id color scale. u 1 5. A hemoglobinometer consisting of an index'card witha chartfor a clinical rec- 0rd on one face thereof, a graduated color scale on the other face, a pocket formed by the overlapping of the tWo faces', the face carrying the said color scale having a substantially oblongsegment cut out along the lower edgeof said face, between said lower edge and the lower margin of the color scale and to the full width of said color-scale but not forthe-full width of the card.

6. 'A hemoglobinometerrin the form of an index card consisting of, superimposed sheets and comprising a graduated color scale, a pocketform'ed between the saidsuperimposed sheets, and a recordchart on one of the sheets.

7 Ahemoglobinometer in the form of an index card consisting of superimposed sheets and comprisinga graduated color scale, with a perforation in each color field of the said color scale. I

8. A hemoglobinometer in th form of an index card, consisting of superimposed sheets, a pocket formed between said sheets, a record chart on one of the sheets, and a graduated color scale on the other sheet.

9. hemoglobinometer in the form of an index card, consisting. of superimposed sheets, a pocket formed between said sheets,

a record chart on one of the sheets, and in combination therewith a graduated color Scale on the other sheet, and with a perforaq tiori in each color field of the said color scale.

1() An improved card index card, in combination with a hemoglobinometer, comprising an overlap ping folds being astened along the side edges so as to form a pocket between the superimposed folds, and in combination therewith a blood-color scale on the one face of said card and a clinical record chart on the other face of said card, and wherein the superimposed fold of said overlapped sheet carrying the said color scale has an oblong segment cut out along the length of the said color scale for a part ofthe long axis of the.

card but leaving the side edges of both the upper and lowerlayers intact.

' llQA combined-vhemoglobinometer and a clinical record chart, in the form of a filing card, having a hemogl'obinometric ,color scale on one side ,thereofand the clinical Witnesses: 1 p

. FREDERIGKVKRAUS, FRED DI'I'IELBAOH.

sheet, the overlap- 

